Ever wanted to a launch a fleet of killer drones with the blink of an eye? Good news, researchers have just the thing.

Katia Vega, a computer scientist at the Pontifical Catholic University in Rio de Janeiro, Brazil, has created false eyelashes and eyeshadow that, when she blinks, complete a low power circuit and trigger commands.

She's already demonstrated the technology at a Scottish conference, and is in talks to commercialise it - so just be warned, next time a girl flutters her eyelashes at you, it might not end well.